Thermal density matrix renormalization group for highly frustrated quantum spin chains: A user perspective

Heveling R, Richter J, Schnack J (2019)
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 487: UNSP 165327.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Autor*in
Heveling, Robin; Richter, Johannes; Schnack, JürgenUniBi
Abstract / Bemerkung
The thermal density matrix renormalization group (DMRG) is investigated with emphasis on employability in molecular magnetism studies. To this end magnetic observables at finite temperature are evaluated for two one-dimensional quantum spin systems: a Heisenberg chain with nearest-neighbor antiferromagnetic interaction and a frustrated sawtooth (delta) chain. It is found that thermal DMRG indeed accurately approximates magnetic observables for the chain as well as for the sawtooth chain, but in the latter case only for sufficiently high temperatures. We speculate that the reason is due to the peculiar structure of the low-energy spectrum of the sawtooth chain induced by frustration.
Stichworte
Molecular magnetism; Approximate methods; Numerical simulation studies; DMRG
Erscheinungsjahr
2019
Zeitschriftentitel
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Band
487
Art.-Nr.
UNSP 165327
ISSN
0304-8853
eISSN
1873-4766
Page URI
https://pub.uni-bielefeld.de/record/2936316

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Heveling R, Richter J, Schnack J. Thermal density matrix renormalization group for highly frustrated quantum spin chains: A user perspective. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS. 2019;487: UNSP 165327.
Heveling, R., Richter, J., & Schnack, J. (2019). Thermal density matrix renormalization group for highly frustrated quantum spin chains: A user perspective. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 487, UNSP 165327. doi:10.1016/j.jmmm.2019.165327
Heveling, R., Richter, J., and Schnack, J. (2019). Thermal density matrix renormalization group for highly frustrated quantum spin chains: A user perspective. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 487:UNSP 165327.
Heveling, R., Richter, J., & Schnack, J., 2019. Thermal density matrix renormalization group for highly frustrated quantum spin chains: A user perspective. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 487: UNSP 165327.
R. Heveling, J. Richter, and J. Schnack, “Thermal density matrix renormalization group for highly frustrated quantum spin chains: A user perspective”, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, vol. 487, 2019, : UNSP 165327.
Heveling, R., Richter, J., Schnack, J.: Thermal density matrix renormalization group for highly frustrated quantum spin chains: A user perspective. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS. 487, : UNSP 165327 (2019).
Heveling, Robin, Richter, Johannes, and Schnack, Jürgen. “Thermal density matrix renormalization group for highly frustrated quantum spin chains: A user perspective”. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 487 (2019): UNSP 165327.